245136423 has 16 divisors (see below), whose sum is σ = 393201920. Its totient is φ = 132705216.

The previous prime is 245136407. The next prime is 245136427. The reversal of 245136423 is 324631542.

It is not a de Polignac number, because 245136423 - 2⁴ = 245136407 is a prime.

It is a super-4 number, since 4×245136423⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245136427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306790 + ... + 307587.

It is an arithmetic number, because the mean of its divisors is an integer number (24575120).

Almost surely, 2^245136423 is an apocalyptic number.

245136423 is a deficient number, since it is larger than the sum of its proper divisors (148065497).

245136423 is a wasteful number, since it uses less digits than its factorization.

245136423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614406.

The product of its digits is 17280, while the sum is 30.

The square root of 245136423 is about 15656.8331089017. The cubic root of 245136423 is about 625.8485949239.

Adding to 245136423 its reverse (324631542), we get a palindrome (569767965).

The spelling of 245136423 in words is "two hundred forty-five million, one hundred thirty-six thousand, four hundred twenty-three".